Add a Decryption Certificate

See more MIME Examples

Loads a CMS/PKCS #7 encrypted S/MIME message and decrypts it back to the original MIME content.

AddDecryptCert adds a certificate (with private key access) to the collection Chilkat searches when decrypting. Call it once for each candidate certificate.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Dim success As Long
success = 0

Dim mime As New ChilkatMime
success = mime.LoadMimeFile("qa_data/encrypted.eml")
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

'  Add a certificate (with access to its private key) to the collection available for decryption.
'  Call it once per candidate certificate; Chilkat picks the one matching the encrypted message.
Dim pfxPassword As String
pfxPassword = "myPfxPassword"
Dim cert As New ChilkatCert
success = cert.LoadPfxFile("qa_data/recipient.pfx",pfxPassword)
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

success = mime.AddDecryptCert(cert)
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

success = mime.Decrypt()
If (success = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

Dim body As String
body = mime.GetBodyDecoded()
If (mime.LastMethodSuccess = 0) Then
    Debug.Print mime.LastErrorText
    Exit Sub
End If

Debug.Print body